Fluid motor



W. A. FRY

FLUID MOTOR Filed Nov. 22. 1928 2 snoets shee-t 1 INVENTOR. WzZZiam A.Frg

A TTORNEY.

I Jan. 20, 1931.

Jan. 20, 1931.

w. A. FRY

FLUID MOTOR Filed N ov. 22. 1928 2 Sheets-Shut 2 INVENTOR. William A. Fr y A TTORNEY.

Patented Jan. 20, 1931 i -UNiTED STATES WILLIAM A raw, or PUEBLO, :coLoRADo FLUID moron Application filed November 22, 19 28. fierial flo. 321321;,

The object of the invention is to provide a fluid motor of the rotary type susceptible of rotation in either direction by the mere change of the point of admission of the moand the whole susceptible of cheap manufacture and low marketing cost.

WVith this object in view, the invention consists in a construction and combination of parts of which a preferred embodiment is il-V lustrated in the accompanying drawings,

wherein:

Figure 1 is a central vertical sectional view of the invention taken transversely of the rotary member.

Figure 2 is a transverse vertical sectional view on the plane indicated by the line 22 of Figure 1. I

Figure 3 is a side elevational view of the rotor. v

Figure 4 is an edge elevational view of the rotor. 7 30 Figure is a detailed perspective view illustrating one of the rotary rings operating in combination with the rotor.

Figure dis a perspective view illustrating one of the oscillating plates constituting an element of the rotor assemblage.

The rotor, which consists of a spider 10, a

ring structure 11 and oscillating plates 12, is mounted for angular or turning movement in the stator consisting of complemental case elements 14; each of which is provided witha supporting leg or foot 15 and the two of which are secured together by bolts 16 passing through registering holes in the flanges 17 V Of the rotor assemblage, the spider 10, which is provided with radially extending blades 18, is mounted on the drive shaft 19, to which it iskeyed, as indicated at 20, the

50, drive shaft rotating in bearings 21 formed in structure and the the case elements1 1 and'beingsurrounded by glandnuts 22. 1

* The ringstructure 11 is mounted for angular or turning movement inthe stator but with its axisof rotation eccentric to that-"of the spider. The ring structure consistsof a; pair of complemental rings 23 formed with lateral slots 24 uniformly spaced angularly and "of a number agreeing 'withthe number" of bladeslS on the spider. Each ring 23 is carried on balls 25, the balls' 'being in turn carried in races 26 formed in lateral slots in thefcaseelem'ents 14; Inserts 27 fareset in;

'theca'se elements adjacent the races, being detacliably secured in place byfmeans of screws 28, and, when these inserts-*- are de-f tacked and therings 23' positioned, the balls may be inserted until the full-complement is supplied, when 'the inserts may be -re-' attached. Q The tworings 23 carried by the two case elements are in edge engagement when the case elements-are assembled and the'slots 24, registering, provide clearing spaces for the blades-18 of the spider, the body portioni'fi" ofthespider bein surrounded by the ring;

blades extending through the same. Sincethe ring structure is eccentric to the spiderfit is necessary that the slots- 24 beef sufficient angular extent to to provide binding engagement between' t-he spider and the rin structure and'this would result in leakage of the motive fagent through the slots," were 1 it 'niot -f or the arcuatle oscillating plates 29'whi'ch are provided with slots 8 30 throughwhichthe" blades 18 extend. The plates 29 conform to the outer "periphery of the'ri'ng structure as a whole and are of a width equal to'the combined width of the tworings';23,so that they extend intothe slots of the casemembers 14inwhich"the rings are mountedand thus effectively cover the sl0tS'24 in the rings 23;

The case members '14 are constructed to form, when assembled, a work chamber 31 and inlet and outlet'chambers-32 and 33, theselatter two changing in function depending upon the direction of rotation of the rotor; Each case member vis providedwith nipples 34 and35in communication-withthecham 1 bers 32 and 33 respectively. The purpose of this arrangement is to connect the nipples 34 and 35 of one case member to a motive agent'supp'ly source and the corresponding nipples of the 'other'case member to an' exhaust pipe. In Figure 1 this arrangement is suggested in dotted lines, the intake pipe 36 being provided with the branches 37 and 38 connected with the nipples 34 and 35 respectively and the pipe 36 at its juncture with the branches having a two-wayvalve39 for selectively directing the motive agent through the. nipples 34 or 35. The other case element is correspondingly equipped, so that, when the nipple 35 ofthe one constitutes the intake the nipple 34 of the other constitutes the exhaust, and vice versa.

, The work chamber 31 for an approximate chamber interposed between the two, the

rotor consisting of a spider provided with blades traversing the work chamber, and a ring in surrounding relation to the spider ture.,

WILLIAM A. FRY.

angular distance of 97 reckoned with the axis of the shaft 19 as the center is of a Width corresponding to the width of the blades 18. w The outer-or arcuate wall of'this chamber is formed on a radius corresponding to the radial extent of the blades 18. The lower arcuate wall ofthe chamber 31, however, is

formed by the oscillatory plates 29 and, therefore, the chamber is not quite as highat its extremities as at its center but to all practical intent is of uniform cross-section throughout its angular extent. The chambers,

32and 33, however, are wider than the chamber 31 and, irrespective of I which of these is employed as the admission chamber for the motive agent, the latter is directed to thesurroundingfrelation to the spider and chamber 31 in which at least one of the blades 18 vis positioned and will prevent the passage ofthe motive agent without the application ofa turningforce to the spider. I

By,reason of the eccentric mounting of the spider and ring structure, theblades have the effect/of moving radially, inwardly'and outwardly of the ring structure, having al-, ways the greatest radial extent beyond the ring structure when they are positioned in V the chamber31 where theyiare subject to. the

pressure of the motive agent,

u The invention havingbeen described, what is claimed as new and; useful is:

1.v A rotary motor comprising astato'r and arotor, the former being dividedinto. admis-i sion and exhaust chambers and a work cham+ ber interposedv between the two, the rotor consisting of a spider provided with blades traversing the work chamber, and a ring in mounted; for rotary movement eccentrica'lly V of the same, the ring having clearance slots for the blades of the spider and arcuate plates conforming to and bearing; upon the outer periphery; of the ring and having slots through which the blades of the spider project. 5

12 A rotary motor comprising a stator and a rot-or, the former being dividedvinto admlsslqn and exhaust chambers and a work 

